Distinguishing Rock Art and Sculpture in the Formative Landscape

As previously mentioned, many examples of Formative rock art demonstrate considerable stylistic and iconographic overlap with contemporaneous sculptures. It may therefore be tempting to dismiss any distinction between these two artforms as a product of Western bias, suggesting that Mesoamerican peoples did not differentiate between the two. Certainly, petroglyphs and sculpture share methods of facture—hammering, incision, and abrasion—and their intrinsic materiality. As David Stuart (Reference Stuart, Guernsey, Clark and Arroyo2010:286, 287–290) argued, “Mesoamericans saw upright stones and associated altars, both carved and uncarved, as evoking the very natural substance of the earth and its interior,” further suggesting that both rock faces and stone monuments were conceptually related as extensions of the animate earth.

However, there are also strong arguments for distinguishing between these two categories. On one hand, we can simply choose to embrace etic classifications of art as meaningful and pertinent to modern scholarly inquiry, even if they were not shared by the Indigenous creators, recognizing that external frameworks can be useful to academic studies of cultural and historical development. On the other hand, we can recognize the experiential and contextual distinctions between both the production and viewing of rock art versus sculpture. Such distinctions would have been readily evident to both creators and audiences.

The production of freestanding stone monuments required quarrying and transporting the rock, separating it from its place of origin, and eventually integrating it into the built environment. Beginning in the Early Formative, stones were carved and recarved in specialized workshops like those of Llano del Jicaro (Gillespie Reference Gillespie1994) and the monument recycling workshop adjacent to the Red Palace in San Lorenzo's Complex D (Cyphers Reference Cyphers, Grove and Joyce1999:165–168). In contrast, rock art was often produced in situ, at times in distant locations that required laborious travel for both its creation and viewing.

Rock art is inherently landscape art (Whitley Reference Whitley2005:3), and as such it is ideologically bound in place, both responding to and manifesting the inherent significance or sacredness of the site. Rock art images are integrated—both literally and conceptually—with the support surface, as well as the surrounding topography. Its production requires the artist to adapt their methods of facture to the natural qualities of the support surface, compensating for the changes in depth, texture, quality, and so on. Rock art may also include marks on stone, such as pecked pits or grooves, that are created both autonomously and in conjunction with petroglyphs and pictographs. These marks are indexical traces of rituals frequently carried out in the vicinity of rock art in conjunction with the creation and use of the site's imagery (Bednarik Reference Bednarik, Lewis and Bednarik2010:71; Palka Reference Palka2014:194; Whitley Reference Whitley2005:13).

Once created, rock art becomes part of the “interlinked ecologies that make places” (Jones Reference Jones, Abadia and Porr2021:51). These ecologies include other-than-human beings, such as the supernatural forces believed to dwell in potent natural features such as caves, mountains, springs, and rocks (Moyes and Prufer Reference Moyes and Prufer2013:229; Stone Reference Stone2014:49), but also extending to animals, insects, lichen and other plants, and the deified elemental forces of rain, wind, and sun (Alberti and Fowles Reference Alberti, Fowles and Birch2018:134).

That Mesoamerican artists, patrons, and viewers may have drawn conceptual parallels between rock art and stone monuments (Stuart Reference Stuart, Guernsey, Clark and Arroyo2010:286–287) need not erase the very clear differences that must have been perceptible in their facture and contexts of viewing. Rather, as I suggest later, this conceptual overlap was a contrivance or conceit of a cultural ideology intentionally cultivated to harness the potency of the wild and re-site it within the landscape of the civic center.

Over the past decades a significant cross-cultural body of literature has emerged that considers the materiality of stone and its artistic engagements via sculpture and rock art within the broader context of the landscape—a term defined here as a cognitive and symbolic construction of space that is informed by but also moves beyond natural topography (e.g., Cosgrove Reference Cosgrove1998; Dean Reference Dean2010; Tilley Reference Tilley2004, Reference Tilley2021). In considering Mesoamerican landscape specifically, scholars such as James Brady and Wendy Ashmore (Reference Brady, Ashmore, Ashmore and Knapp1999:126) have argued that ancient Indigenous peoples viewed the built and natural environments as a continuum, “a nearly seamless extension of worldview, manifest in domestic, civic, and wider spatial scales.” However, within this larger continuum, the roles played by rock art and freestanding sculpture can be differentiated in part by their placement in a dualistic framework that distinguished center from periphery and wild from domestic.

Rock art in the Formative period tends to be relegated to liminal spaces, such as routes of travel, borders or territorial boundaries, cave entrances and interiors, or rocky hillsides and talus slopes (Angulo V. Reference Angulo V. and Grove1987; Clark et al. Reference Clark, Guernsey, Arroyo, Guernsey, Clark and Arroyo2010:10; Gay Reference Gay1967, Reference Gay1972; Grove Reference Grove1969, Reference Grove1970; Parsons Reference Parsons1986:90–91). David Grove and Susan Gillespie (Reference Grove, Gillespie, Fash and Luján2009:66–67) note that the petroglyphs at Chalcatzingo were both spatially associated with the site's periphery and thematically tied to peripheral states of being. They contrasted this with the placement of freestanding stone sculptures in the site center to suggest a conceptual and spatial center–periphery duality. As at Chalcatzingo, freestanding sculptures throughout the Formative tend to be concentrated in site centers, with few examples found outside areas of human settlement.

Similar to Grove and Gillespie's model of center–periphery dualism, Andrea Stone (Reference Stone1992) argued for a distinction between the wild and domesticated spaces of ritual activity in Mesoamerica, an argument that Karl Taube (Reference Taube, Gómez-Pompa, Allen, Fedick and Jiménez-Osornio2003) elaborated in relation to Maya concepts of field (milpa) and forest. Stone (Reference Stone1992:112–113) associated rock art with the liminal spaces of wilderness that were both dangerous and sacred, home to spiritual forces that governed the animate earth. In discussing contemporary Maya pilgrimage to caves, boulders, or unusual rock formations—including sites with rock art—Joel Palka (Reference Palka2014:192) likewise noted, “These portals into the spiritual realm are in the peripheries of settlements because of their dangerous, wild, socially marginal, and spiritual characteristics.”

Alternatively, Taube (Reference Taube, Gómez-Pompa, Allen, Fedick and Jiménez-Osornio2003:463–465) observed that human labor, including the production of art and architecture, was associated with spaces of domestic habitation, as well as governance, morality, and cosmic order. Principles of cosmic order pervade the site cores of many Mesoamerican settlements beginning in the Formative period, including those of the Gulf Olmec. Scholars have long argued that these urban ceremonial spaces were configured in relation to cosmological models (e.g., Clark Reference Clark, Hendon and Joyce2004; Fuente Reference Fuente, Benson and de la Fuente1996:41; Grove Reference Grove, Grove and Joyce1999; Reilly Reference Reilly and Stone2002; Tate Reference Tate and Staller2008). Beatríz de la Fuente (Reference Fuente and Benson1981:83) also theorized that some Olmec sculptures incorporated the golden mean, suggesting that sculptors working in the round strove to convey cosmic order through the harmonic proportions of their figures. It seems reasonable to suggest, then, that sculptures within the built environment of primary site cores were part of the ordered domestic realm designed to replicate and convey broader cosmological principles.

Despite their shared stylistic and iconographic vocabularies, rock art can be clearly distinguished from freestanding sculpture in method of facture and context, both of which would have informed meaning. The production and viewing of rock art as a manifestation of the sacred in peripheral or liminal places gave it a potency that was quite distinct from freestanding sculptures erected in the domestic order of the urban center. In drawing this distinction, I do not wish to eschew nuance or to overlook slippages between these categories. Instead, I mean to draw attention to the artistic agency of such slippages, suggesting that some Formative artists—particularly those of the Gulf Coast—intentionally harnessed the aesthetic properties of rock art, bringing its conceptual power into the civic arena.

Aesthetic Continuities

With little stone suitable for sculpting found in their local topography, Olmec societies in the Gulf lowlands imported large blocks of volcanic rock and carved them into freestanding megalithic monuments.Footnote ³ Many of these sculptures were carved in rounded, organic forms that show remarkable attention to modeling and smoothly finished surfaces (see Figure 1c). However, the sculptors of the Gulf lowlands occasionally abandoned the three-dimensional modeling of figures in favor of an adherence to and adaptation of unmodified stone surfaces, wedding “their incisions to the natural valleys, planes, and protuberances of the stone's surface” (Guernsey and Strauss Reference Guernsey, Strauss, Love and Guernsey2022:211). Preservation of the natural contours and surface qualities of the stone is unusual in figurative freestanding sculpture but is frequently a hallmark of rock art, including Olmec-style petroglyphs. Here I suggest that this aesthetic quality would have been recognizable to audiences as comparable to the appearance of contemporaneous rock art.

Matthew Stirling was among the first to observe that some monuments at La Venta retained the organic shapes of natural rocks. He particularly drew attention to Stela 2, which he noted preserves the irregularities of the original stone surface, rather than creating a smooth plane on which to carve the imagery of the ruler surrounded by floating supernatural beings (Figure 3a; Stirling Reference Stirling1943:51). Other stelae at La Venta similarly retain the irregular surfaces and outlines of the megalithic stones onto which relief imagery featuring human elites, supernatural beings, and sacred mountains was grafted (Figure 3b-d; González Lauck Reference González Lauck1997; Grove Reference Grove2007; Stirling Reference Stirling1943). The dimensions of some of these Middle Formative stelae, such as Monument 25/26, are significantly grander than their Late Formative and Classic period counterparts, giving them a geological, rather than human, sense of scale (Guernsey and Strauss Reference Guernsey, Strauss, Love and Guernsey2022:213).

Figure 3. Examples of stelae from La Venta, Tabasco. (a) Stela 2, La Venta Parque; (b) Stela 3, La Venta Parque; (c) Stela 5, La Venta site museum; (d) Monument 25/26, La Venta site museum.

Other sculptures at La Venta juxtapose planar supports for relief with irregular surfaces and borders. For example, the smooth, regular surface of Monument 13—bearing the relief of a human figure and one of the earliest columnar inscriptions in Mesoamerica—stands in contrast to the rest of the monument, which is left uncarved to reveal its origin: a transverse section of columnar basalt (Figure 4; Guernsey and Strauss Reference Guernsey, Strauss, Love and Guernsey2022:212). Similarly, the delicate scultping of Monument 19 stands out from a planar surface at variance with the monument’s uneven natural borders. Philip Drucker and coauthors (Reference Drucker, Heizer and Squier1959:197) first noted that the curves of the sinuous avian serpent on this monument follow the irregular outline of the stone support, while Stone (Reference Stone1992:121) drew parallels between this serpent and the one painted in the interior recesses of Juxtlahuaca Cave in Guerrero. The Juxtlahuaca serpent's body similarly follows the natural profile of the stone projection on which it is painted (Figure 5a-b; Stone Reference Stone1992:121).

Figure 4. Monument 13, La Venta, La Venta Parque.

Figure 5. Formative avian serpent imagery. (a) Monument 19, La Venta, Tabasco, Museo Nacional de Antropología; (b) pictograph in Juxtlahuaca Cave, Guerrero (courtesy of Matthew Lachniet). (Color online)

Are these La Venta monuments representative of a new sculptural trend emerging in the Middle Formative? Few sculptures from the Early Formative center of San Lorenzo and its hinterlands demonstrate the same interest in adhering to the irregular contours of their stone supports. One exception is San Lorenzo Monument 56, carved with a human struggling against a monstrous zoomorph sporting a sinuous tongue and wicked claws (Cyphers Reference Cyphers2004a:120, Figure 68). Notably, the subject matter of this stela or column parallels that of Monument 63 from La Venta, which features a male figure gripping a fierce creature with rows of menacing teeth and aquatic flippers (Figure 6; Coe and Diehl Reference Coe and Diehl1980:363). Both monuments preserve at least some sense of an organic outline and irregular stone surface, as well as ground circular depressions or pits also referred to as “cupules.” The frequency of adapting the sculpted forms to irregular stone surfaces does appear to increase dramatically at La Venta, suggesting a growing trend as we shift from the Early to Middle Formative centers of the Gulf Olmec.

Figure 6. Monument 63, La Venta, La Venta Parque.

However, the Early Formative does see the incorporation of boulder sculpture into the site of San Lorenzo. As mentioned earlier, boulder sculpture—defined as a boulder that has had one or more surfaces modified by sculpting or incising—is here considered a form of rock art and is one of the primary formats associated with Olmec-style petroglyphs, including those at Chalcatzingo, Morelos; Los Mangos, Veracruz; Xoc, Chiapas; Pijijiapan, Chiapas; Takalik Abaj, Guatemala; and Chalchuapa, El Salvador. These and other boulder sculptures retain some or most of their original contours and mass, preserving clear visual referents to their status as boulders. The significance of boulders as features in the sacred landscape of Mesoamerica is occasionally overlooked. However, Palka (Reference Palka2014:190) notes, “Boulders—viewed as places of interaction with the gods and ancestors who may be petrified within them—are frequently seen at cave entrances, and they often share similar rock art.” Contemporary Maya groups still make pilgrimages to and conduct rituals at specific boulders and bedrock sites, which they perceive as entrances to the home of the earth lord (Palka Reference Palka2014:190–192). In the context of Formative site centers, boulder sculptures recall their counterparts in the wild while providing an aesthetic counterpoint to the three-dimensional modeling and planar surfaces of other sculptures in the urban landscape.

Several of San Lorenzo's monuments take the form of irregular boulders (Monuments 21, 109, 112). These sculptures retain vestiges of low relief carvings on one or more surfaces, although the remnants of relief on Monument 109 have largely been effaced or eroded, preventing any interpretation of the stone's original function or iconography (Cyphers Reference Cyphers2004a:188, Figure 123). Monument 112 is a large boulder sculpted with the figure of a single man spread-eagled over the surface, a knife and belt his only adornments (Figure 7a). The stone was discovered with the relief face down, its dorsal surface marked with 102 grooves and six cupules (Cyphers Reference Cyphers2004a:191, Reference Cyphers2004b). A similar boulder with comparable groove marks (Monument 63) was discovered by Jürgen Brüggemann and Marie-Areti Hers in 1970, but the monument was never fully excavated (Brüggemann and Areti-Hers Reference Brüggemann and Areti-Hers1970; Coe and Diehl Reference Coe and Diehl1980:365). It is possible that the posterior side bears a relief similar to that of Monument 112, but for now this remains only speculation (Coe and Diehl Reference Coe and Diehl1980:365; Cyphers Reference Cyphers2004a:130).Footnote ⁴

Figure 7. Examples of Olmec boulder sculptures at San Lorenzo. (a) Monument 112, site museum; (b) Monument 21, Museo Nacional de Antropología.

Monument 21 is believed to have functioned as a sort of “lid” or cover to a stone box or sarcophagus (Fuente Reference Fuente1984:110; Graham Reference Graham, Sharer and Grove1989:245). However, when viewed from the side, the stone resembles nothing so much as a smoothed boulder with asymmetrical proportions. Its surface bears a petroglyph depicting a quadrupedal animal positioned as though in motion (Figure 7b; see also Cyphers Reference Cyphers2004a:85–86, Figures 41–42). The animal is surrounded by several cupules and grooves, similar to those marking Monument 112. The relief was placed face down over a pit containing a “cache of celts, natural rocks resembling celts, and pottery” dating to the San Lorenzo A phase, the early part of the period between 1150 and 900 BC designated as the San Lorenzo phase (Coe and Diehl Reference Coe and Diehl1980:332). However, John Graham (Reference Graham, Sharer and Grove1989:245) noted that erosion of the surface bearing the relief indicates that this was the side facing upward for much of the stone's use life. In contrast, the opposing side is evenly sculpted with smoothed planes and a hollow or niche of relatively even proportions (Coe and Diehl Reference Coe and Diehl1980:Figure 453). The careful working of this side provides a stark contrast to the exposed surfaces that mimic the irregularly rounded profile of a natural boulder. I propose that this monument may have begun its “life” as a boulder sculpture that was later converted into a lid or container, with the niche added to support its new function.

It is also worth noting that Colossal Head 8 from San Lorenzo retains the irregular outlines of the original basaltic flow from which it was sculpted, which might associate it with other forms of boulder sculpture (Figure 8; Cyphers Reference Cyphers2004a:127). It was originally found under the floor of a platform bordering the sunken patio of the Group E complex, its context unique among the colossal heads (Cyphers Reference Cyphers, Grove and Joyce1999:163). However, the other colossal heads also seem designed to emphasize their material origins. As Michael Coe and Richard Diehl (Reference Coe and Diehl1980:300) observed of Head 1 from San Lorenzo, “an examination of this and other great heads will show how very slightly the original boulder (or the transported blank) has been modified.” More broadly, the size and mass of colossal heads afford them a topographic quality, carved on a scale typically associated with geological phenomena in the natural world.

Figure 8: Colossal Head 8 at San Lorenzo, Museo de Antropología de Xalapa.

Additional boulder sculptures are also present at La Venta, although they are not abundant. The most notable example is the so-called Altar 7, the front of which is sculpted with a single niche filled with the head of an individual (spirit or human) wearing a buccal mask (Figure 9a). The surrounding stone undulates with irregular projections and recessions carved with human figures in low relief and the heads of birds (perhaps owls) sculpted from protruding nodules as though emerging from the stone itself. Its surface is marked with linear grooves comparable to those on the Early Formative Monuments 21 and 112 from San Lorenzo.

Figure 9. Boulder sculptures in La Venta Parque. (a) Altar 7; (b) Monument 68.

La Venta Monument 68 is also an irregularly shaped boulder that shows the remnants of relief carving on one side (see González Lauck Reference González Lauck2021:120). However, at some point a humanoid face was crudely incised and holes were drilled or ground to suggest nostrils (Figure 9b). The rough features blend with numerous incised grooves on the surface, as well as with the natural irregularities of the stone. This sculpture has sometimes been interpreted as the beginnings of a colossal head that was abandoned during the carving process (González Lauck Reference González Lauck2021:119). However, the stone is much smaller and narrower than the other heads, and the process by which the features were created—as well as their placement—would not have supported the modeling seen in the faces of the other colossal heads. It seems possible that the monument was a re-carved boulder sculpture, given its dimensions and the traces of relief on one side.

The northernmost Olmec site center, Tres Zapotes, has a relatively small corpus of Middle Formative monuments that show little evidence of rock art influence. However, it sits within a region rife with rock art and boulder sculpture—most probably dating to the period of epi-Olmec florescence or later (Porter Reference Porter1989:16–18)—including the petroglyphic field of Cobata. Although it is difficult to determine the chronology of the rock art at this site, the presence of a colossal head is often viewed as evidence of its ties to the Olmec cultural legacy.

Following the observations of James Porter (Reference Porter1989:16–18), Christopher Pool and Michael Loughlin (Reference Pool and Loughlin2017:255, Figure 19) noted similarities between the methods of pecking used to produce rock art in the region and the facture of the Cobata head. They suggest that local artists familiar with the production of petroglyphic sculpture could have been responsible for its carving. This seems a plausible notion given the position of the head among a field of rock art, although the head also evinces similarities to the Monte Alto “potbelly” boulder sculptures from the south, which share its rustic style and closed eyes (Guernsey Reference Guernsey2012; Miles Reference Miles and Wiley1965:244–245; Parsons Reference Parsons and Benson1981:280–288, Reference Parsons1986:44–45). It is possible that the Cobata head's relationship to both petroglyphic techniques and “potbelly” boulder sculptures is based on earlier associations between the colossal heads and boulder sculptures originating at San Lorenzo.

To summarize, it appears that at Early Formative San Lorenzo a few select works of boulder sculpture were incorporated into the site, whereas Monument 56 exhibits the first relief sculpture wrapped around an irregular vertical column or stela. The colossal heads at this site also seem designed to index their material origins as large boulders, with the human features grafted onto enormous stone supports. As we move into the Middle Formative at La Venta, colossal heads and boulder sculptures (although present) are quickly outnumbered by stelae and irregularly shaped monuments supporting relief sculpture. At times these reliefs conform to the irregular stone surfaces in a manner comparable to that of Olmec-style petroglyphs. Although this progression suggests an increasing interest by Gulf Olmec sculptors in adopting or appropriating the aesthetics of petroglyphic relief, the influence of rock art sites and practices—specifically in the form of boulder sculpture—extends back to the Early Formative. As illustrated in the next section, evidence in the form of ritual markings also suggests that conceptual affinities between rock art and sculpture can be traced to the Early Formative period.

Ritual Correspondences

Many of the monuments discussed in the previous section are marked with cupules (sometimes called “pits” or “cup marks”)Footnote ⁵ and V-shaped linear incisions or “grooves.” Often referred to by David Grove's (Reference Grove and Benson1981:61) designation of “nonspecific mutilations,” these marks have been variously discussed as a form of mutilation or defacement (Clewlow et al. Reference Clewlow, Cowan, O'Connell and Benemann1967:71; Coe Reference Coe1968; Coe and Diehl Reference Coe and Diehl1980:297–298; Covarrubias Reference Covarrubias1957:76–77; Drucker et al. Reference Drucker, Heizer and Squier1959:229–230; Stirling Reference Stirling1940:334), the product of tool sharpening by later cultures (Clewlow Reference Clewlow1974:13; Clewlow et al. Reference Clewlow, Cowan, O'Connell and Benemann1967:70–76; Covarrubias Reference Covarrubias1946:29; Stirling Reference Stirling1943:52), or ceremonial markings related to Olmec ritual practices (Clewlow et al. Reference Clewlow, Cowan, O'Connell and Benemann1967:72, 83; Grove Reference Grove and Benson1981:61; Lambert Reference Lambert2014; Pohorilenko Reference Pohorilenko1974, Reference Pohorilenko2007; Steede and Athy Reference Steede and Athy2000:332). They appear on a variety of figural sculptures, as well as on natural and human-formed columns and unworked stones at both San Lorenzo and La Venta.

Within the context of the Formative Olmec, cupules and grooves have been almost exclusively considered in relation to monumental sculpture. However, these marks are better understood as the two most common forms of rock marking in the world (Robert Bednarik reports that cupules are the most common marking, closely followed by linear grooves [Reference Bednarik2008:24; see also Lewis and Bednarik Reference Lewis and Bednarik2010]). Although both cupules and linear grooves are sometimes considered under the umbrella of “rock art” (Strecker Reference Strecker1982:3), they are more properly the indexical markings of ritualized activities carried out in the natural landscape (Bednarik Reference Bednarik, Lewis and Bednarik2010:71; Whitley Reference Whitley2005:13).Footnote ⁶ That these marks are found on a selection of Olmec sculptures suggests that they were subject to ritual treatments that paralleled those carried out on stones located at sacred natural sites and topographic shrines (Pohorilenko Reference Pohorilenko2007:16, 27).

Carlo Gay (Reference Gay1972:97) was perhaps the first to suggest that the cupules on Olmec monuments were related to the corpus of rock markings. However, he conflated the cupules on Gulf monuments with deeper mortars, which Grove (Reference Grove1987:126, 159–170) suggested were created to hold sacred water. Graham (Reference Graham, Sharer and Grove1989:234) observed cupules on Takalik Abaj Monument 23, suggesting continuities with the markings on Gulf Olmec monuments, and Robert Sharer (Reference Sharer, Sharer and Grove1989:262) likewise claimed that cupules found on Chalchuapa Monument 12 and several boulders with pictographs in the finca Sibabaj and Rabinal valleys of Guatemala could similarly be connected to these markings. However, it was unclear how these cupules might relate to or differ from the distinctive cupulate tradition of the nearby Salamá Valley, where the regularity of the depressions on Formative monuments has been interpreted as a form of calendrical notation or ancestral semiographic system (Fahsen Reference Fahsen, Guernsey, Clark and Arroyo2010:245–246; Sharer and Sedat Reference Sharer and Sedat1987:381).

It seems likely that all such marks on Formative rock art and sculptural monuments are comparable to those on Gulf Olmec monuments and that the cupulate monuments of the Formative Salamá Valley have been misinterpreted as semiographic. However, as Arnaud Lambert (Reference Lambert2014:7) asserts, “Until evidence of such a pan-Mesoamerican cupulate tradition is produced that does not rely exclusively on the perceived morphological similarities between the cup-marks of these different regions, we cannot assume that these anthropic markings are part of a single Formative period cultural tradition or even contemporary works.” I agree with Lambert that the distinctive cupulate traditions of greater Mesoamerica cannot be definitively linked to the markings on Gulf Olmec monuments, although their presence on both Formative sculptural monuments and rock art sites is suggestive. Additionally, the connection between anthropic markings on or near Formative petroglyphs and those on Gulf lowland monuments is more tenable when comparing these markings to cupules and grooves found at several charged spaces within the Olmec ritual landscape.

Stirling's (Reference Stirling1943:29, Plate 16b) survey of the region around Tres Zapotes included several examples of petroglyphs on boulders, including a stone carved with scroll designs that appears to have also featured several cupules. More recently, the RRATZ survey project—led by Christopher Pool—documented numerous examples of rock art in the region of Tres Zapotes, including at least two boulders marked with cupules (Petroglyphs B0129, C0059; Pool et al. Reference Pool, Loughlin, Shrestha, Díaz, Melgarejo Pérez, Montejo and García2014:151, 158). In 2015 I recorded an additional boulder with visible cupules during a visit to the petroglyphic field of Cobata (Figure 10a). Given the difficulty of spotting cupules in the natural environment (Bednarik Reference Bednarik2008), there are certainly other examples that have yet to be recorded. Yet this small sample provides clear evidence that a local tradition of cupule production did exist in the rock art of the Gulf Coast.

Figure 10. Examples of cupules and grooves documented in the Tuxtla landscape. (a) Cupules on a boulder located in Cobata, Veracruz; (b) linear grooves along the coastline at Punta Roca Partida, Veracruz.

Linear grooves can also be found marking stones along the coastline of Punta Roca Partida, a site adjacent to the Tuxtla mountains where lava once flowed into the waters of the Gulf (Figure 10b; Clewlow et al. Reference Clewlow, Cowan, O'Connell and Benemann1967:71). These lava flows produced an islet of columnar jointed basalts from which the La Venta and Tres Zapotes Olmec are believed to have culled the natural columns they incorporated into their most ritually significant architecture (Williams and Heizer Reference Williams and Heizer1965:7). It seems possible that the groove marks on the volcanic shore of Punta Roca Partida indicate another site of ritual significance in the natural landscape, where the fiery flow of molten rock met the sea in a dramatic clash. Alternatively, Anatole Pohorilenko (Reference Pohorilenko2007:24, 27) believes that these grooves are the product of more recent inhabitants, suggesting that they indicate the continuation of rock-marking traditions from the Formative into the recent past.

Anthropic markings are difficult to date in rock art settings, and it is possible that the examples of cupule and grooves referenced here postdate the Olmec culture. However, there is clear evidence that their production in the Gulf lowlands extended into the Early Formative period. Both cupules and linear grooves are found on a layer of sandstone fragments that begin the deposition of offerings carried out at the topographic shrine of El Manatí. There a layer of sandstone rocks was used to stabilize the bottom of a spring before ritual offerings were deposited over the course of 600 years (1600–1000 BC; Ortíz Ceballos and Rodríguez Martínez Reference Ortíz Ceballos, Rodríguez Martínez, Clark and Pye2000:75). The larger of these stones—arranged along a north–south axis—bear traces of linear grooves and rounded depressions, which the excavators noted were similar to the marks appearing on Olmec sculptural monuments (Ortíz Ceballos and Rodríguez Martínez Reference Ortíz Ceballos, Rodríguez Martínez, Clark and Pye2000:75). Another series of offerings, excavated as part of the Early Formative Ceiba Group at nearby La Merced, included at least one stone marked with cupules in the final phase of deposition (Rodríguez Martínez and Ortíz Ceballos Reference Rodríguez Martínez, Ceballos, Clark and Pye2000:163). According to Pohorilenko (Reference Pohorilenko2007:16), the appearance of these markings on stones incorporated into the offering deposits at El Manatí and La Merced provides

Additional evidence for the Formative dating of both cupules and grooves comes from monuments discovered in situ that were interred during the Early Formative. Monument 112 and Head 8 were discovered under Early Formative floors at San Lorenzo (Cyphers Reference Cyphers, Grove and Joyce1999:163; Reference Cyphers2004b), and both bore many of these markings. Additionally, the absence of both cupules and grooves on Classic and Postclassic sculptures from the region suggests that these markings (and the ritual activities that led to their creation) were the product of the Formative Olmec.

The appearance of cupules and linear grooves on Olmec stone monuments indicates that—beginning in the Early Formative—Olmec peoples treated these monuments as conceptually similar to topographic sites of ritual in the natural world, such as Punta Roca Partida and El Manatí, perhaps using them as an urban substitution for the more distant sacred loci in the wild. Such continuities between practices of rock marking in the natural landscape and on stone monuments can help us better comprehend both the function of these markings and the reasons for their appearance on certain monuments and not others.

Although Pohorilenko (Reference Pohorilenko2007:16) describes cupules and grooves as “ubiquitous” in Gulf Olmec sculpture, they mark a relatively small percentage of the overall corpus (see Tables 1 and 2). Notably, all colossal heads from San Lorenzo and La Venta are marked with cupules, and all but one (San Lorenzo Head 10) also bear grooves. Additionally, thrones are sometimes subject to these ritual markings, as are several monuments thought to have served as altars (San Lorenzo Monument 51 and Monument 64; La Venta Monument 59). All three of the large-scale “dwarf” sculptures from La Venta's Complex D (Monuments 52–54) show evidence of cupules and grooves (see González Lauck Reference González Lauck, Guernsey, Clark and Arroyo2010:134, Figure 6.3). However, except for the colossal heads, these rock markings are most common on stones that are either unworked or retain some irregularities of the original stone support. Boulder sculptures, irregular stelae, unworked stones, and naturally formed columns make up 33.3% of the total number of marked sculptures at San Lorenzo (where the colossal heads comprise 47.61%) and 40.7% of the marked sculptures at La Venta. Cupules and grooves are relatively uncommon at both Tres Zapotes (where they appear only on Stela F) and on monuments outside the major site centers, though they do appear on the El Viejón monument, an irregularly shaped stela bearing a bas-relief of two elite individuals.

Table 1. Monuments at San Lorenzo with Anthropic Markings (Cupules or Linear Grooves).

* Two of these fragments may have been broken off from one or more colossal heads.

Table 2. Monuments at La Venta with Anthropic Markings (Cupules or Linear Grooves).

* The single groove mark on Altar 2 is distinct in its morphology and may be the result of a different process from that which was used to produce the linear grooves on other monuments. Nevertheless, I have included it here because it cannot be clearly ruled out from the final tally of monuments with anthropic markings.

It is beyond the scope of this article to fully delve into the potential significances of the cupules and grooves marking Olmec sculpture. However, clear points of overlap between the anthropic markings at topographic shrines in the Gulf lowlands and those appearing on the sculptures of San Lorenzo and La Venta are evident. Comparisons with other, global traditions of cupule and groove production may provide fruitful avenues for future research via ethnographic anaology (for a list of potential interpretations compiled from global ethnographic accounts, see Bednarik Reference Bednarik, Lewis and Bednarik2010:67–69). I now turn to some of the possible political and social implications of adapting rock art aesthetics and ritual markings to the sculptures displayed in Olmec site cores.

Re-siting Sacred Landscape in the Civic Center

The adaptation of rock art aesthetics and ritual practices by the sculptors of San Lorenzo and La Venta suggests a deliberate blurring of the boundaries between center and periphery, domestic and wild. Yet, we may ask what Olmec patrons and audiences sought to achieve in making sculptures that looked like rock art or by treating sculptures as congruent with sacred sites in the surrounding landscape. How did the appearance of these works and their engagement by audiences function within the urban center?

In discussing the emergence of Maya kingship, Holly Moyes and Keith Prufer (Reference Moyes and Prufer2013:226) observe, “One of the many paths to political power and legitimacy is the creation of ancestral ties to the land by coopting sacred features within the landscape.” They go on to note that political leaders in Mesoamerica positioned themselves within a symbolic landscape that did not replace but rather reinforced the power of the natural world, with its caves, mountains, springs, and boulders (Moyes and Prufer Reference Moyes and Prufer2013:227). This same political strategy of harnessing the ideological and spiritual potency of the landscape is evident in Formative centers, which incorporated structural and iconographic referents to caves, mountains, and other natural features to manifest and reify their associations with broader sacred geographies (e.g., Grove Reference Grove2007; Reilly Reference Reilly and Stone2002:57, Stone Reference Stone1992:117). And yet, these referents did not dilute the power of the wild places they were meant to represent. Political authority continued to be tied to these places and the spiritual forces that governed them.

Andrea Stone's seminal studies of Mesoamerican rock art and its role in Indigenous ritual practices provide an important window into the political dimensions of Mesoamerican religious life conducted beyond the urban center. Stone (Reference Stone1992:127) first pointed out that Mesoamerican urban rituals were intended to mimic those carried out at topographic shrines in the wilderness. In later research she went on to note that rock art was often an expression of pilgrimage to sacred sites within the landscape and that such pilgrimages were often rhetorically tied to political authority (Stone Reference Stone2014:50–51). This rhetorical link is explained as a paradigm in which

That this analogy was already present in the Early Formative is suggested by the excavations at El Manatí, where offerings included scepters, pectorals, earrings, and other elite paraphernalia (Ortíz Ceballos and Rodríguez Martínez Reference Ortíz Ceballos, Rodríguez Martínez, Clark and Pye2000:83).

Stone's work provides a model for understanding the significance of rock art as part of the sacred landscape and a powerful source of political capital to be co-opted by Formative elites. At San Lorenzo examples of rock art in the form of boulder sculptures were integrated into the site architecture (Monument 112) and used to mark a cache or offering deposition (Monument 21). Concurrently we see the marking of colossal heads, thrones, and other monuments (including these two boulder sculptures) with cupules and grooves like those used to mark stones at topographic shrines such as El Manatí. These same cupules and grooves mark a selection of monuments at La Venta. Additionally, La Venta's sculptors chose to create numerous monuments that model their contours and compositions to the natural surfaces or outlines of the stones from which they are carved. This both draws greater attention to their materiality—tying these images to the ideological force and permanence of the animate earth—and creates aesthetic parallels to contemporaneous Olmec-style petroglyphs located outside the Gulf lowlands.

That many of these petroglyphs appear along routes of travel or as territorial boundary markers likely contributed to their significance for Formative elites. As Moyes and Prufer (Reference Moyes and Prufer2013:227) note, “Features of the landscape served yet another function in the establishment of place by emerging rulers because they aided in reifying territorial and political boundaries.” Marking these territorial boundaries through circumambulation creates the division between field and forest among contemporary Maya peoples and parallels pilgrimage undertaken to topographic shrines in the wild (Moyes and Prufer Reference Moyes and Prufer2013:229–230). Both the establishment of territorial boundaries and acts of pilgrimage can be connected to Mesoamerican traditions of political authority that stretch back to the Classic and likely into the Formative period. That Olmec-style rock art is found in these peripheral regions of travel (and perhaps pilgrimage)Footnote ⁷ or marking territorial boundaries suggests that its creation would likewise have been important to the establishment of political authority.

At San Lorenzo, Cyphers and di Castro (Reference Cyphers, di Castro, Fash and Luján2009:28–29) proposed that the colossal heads were arranged in a macro-scene that could have been experienced via processual movement. Similarly, various scholars have argued that architecture and sculptural groupings at La Venta might have been used to delimit site boundaries and to guide audiences through the space as a part of their viewing (e.g., González Lauck Reference González Lauck, Guernsey, Clark and Arroyo2010:154; Guernsey and Strauss Reference Guernsey, Strauss, Love and Guernsey2022:210; Tate Reference Tate and Staller2008:38).Footnote ⁸ Stone (Reference Stone1992:117) also suggested that the axial plan at La Venta formed a processional route leading to the C-1 pyramid, facilitating public processions that were intended to evoke actual pilgrimages to sacred mountains. Within this context, the inclusion of sculptural referents to rock art sites would likely have recalled similar acts of procession and circumambulation in the wild, reinforcing the site core's construction as microcosm.

The adaptation of rock art aesthetics appears to represent efforts by Olmec elites to bring the potency of topographic shrines into the cosmic order of the urban setting (Stone Reference Stone1992:127). These shrines were places of relational ecologies between humans and nonhumans that provided access to the forces that governed the land, suggesting that their sculptural referents likewise functioned as places of social action and engagement, not merely representation. The presence of cupules and grooves, insofar as they can be read to index ritual behaviors, reinforces this supposition.

By the Late Formative period, however, the artistic winds seem to shift. Sculptors largely move away from irregular surfaces and toward planar supports wherein the pictorial field is clearly defined. Image is privileged over material, and the iconography becomes more complex and is occasionally accompanied by text (Clancy Reference Clancy, Clancy and Harrison1990:27). Cupules and grooves disappear from sculpted monuments by the early Classic period, although they are likely still produced in the wild. However, sacred geographies and the supernatural forces that control the land continued to be important sources of political legitimation among later Indigenous peoples of Mesoamerica, their power expressed via new aesthetic and material forms.